Wha!? .... Even though... Haruna isn't all right, Haruna says, 'Yes! Haruna is all right!' as though Haruna is all right, then things turn out all right, so, Haruna thinks it's all right, and if anything wasn't all right, that wouldn't be all right ... so... it's all right... right? ... Haruna is all right...

It refers to a condition of being safe enough to be at ease, that is, a strong sense of having everything together. It can also refer to a man with a fine figure.